uu.seUppsala University Publications
Change search
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf
Electronic structure of (Ga, Mn) As revisited
Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden..
Chalmers, Dept Appl Phys, SE-41296 Gothenburg, Sweden..
Univ Skovde, Dept Engn Sci, SE-54128 Skovde, Sweden..
Univ Karachi, Dept Phys, Karachi 75270, Pakistan..
Show others and affiliations
2017 (English)In: New Journal of Physics, ISSN 1367-2630, E-ISSN 1367-2630, Vol. 19, 023006Article in journal (Refereed) Published
Abstract [en]

The detailed nature of electronic states mediating ferromagnetic coupling in dilute magnetic semiconductors, specifically (Ga, Mn) As, has been an issue of long debate. Two confronting models have been discussed emphasizing host band versus impurity band carriers. Using angle resolved photoemission we show that the electronic structure of the (Ga, Mn) As system is significantly modified from that of GaAs throughout the valence band. Close to the Fermi energy, the presence of Mninduces a strong mixing of the bulk bands of GaAs, which results in the appearance of a highly dispersive band in the gap region of GaAs. ForMnconcentrations above1% the band reaches the Fermi level, and can thus host the delocalized holes needed for ferromagnetic coupling. Overall, our data provide a firm evidence of delocalized carriers belonging to the modified host valence band.

Place, publisher, year, edition, pages
2017. Vol. 19, 023006
Keyword [en]
dilute magnetic semiconductors, band structure, magnetic coupling
National Category
Physical Sciences
Identifiers
URN: urn:nbn:se:uu:diva-331901DOI: 10.1088/1367-2630/aa5a42ISI: 000405916900002OAI: oai:DiVA.org:uu-331901DiVA: diva2:1152299
Available from: 2017-10-24 Created: 2017-10-24 Last updated: 2017-10-24Bibliographically approved

Open Access in DiVA

No full text

Other links

Publisher's full text

Authority records BETA

Di Marco, Igor

Search in DiVA

By author/editor
Di Marco, Igor
By organisation
Materials Theory
In the same journal
New Journal of Physics
Physical Sciences

Search outside of DiVA

GoogleGoogle Scholar

doi
urn-nbn

Altmetric score

doi
urn-nbn
Total: 32 hits
CiteExportLink to record
Permanent link

Direct link
Cite
Citation style
  • apa
  • ieee
  • modern-language-association
  • vancouver
  • Other style
More styles
Language
  • de-DE
  • en-GB
  • en-US
  • fi-FI
  • nn-NO
  • nn-NB
  • sv-SE
  • Other locale
More languages
Output format
  • html
  • text
  • asciidoc
  • rtf